How to Convert Living DNA Raw Data to 23andMe Format for Free

To convert a Living DNA raw data download to 23andMe format for free, drop the file on https://healthosx.com/dna/convert and choose 23andMe as the output. It runs in your browser, copies your genotypes without changing them, and gives you a tab-separated .txt with the four columns 23andMe tools expect.

How do I convert Living DNA raw data to 23andMe format for free?

The converter page does not state a conversion duration. The time depends on the file size and your device because the file is processed locally.

• Download your raw data from Living DNA. It is usually a .txt or .csv, sometimes inside a .zip. Leave the zip as it is.
• Open the converter page linked above.
• Drop the Living DNA file onto the page.
• Choose 23andMe as the output format.
• Download the converted .txt.

No account, no email, and the file is not sent anywhere. The page uses the same reader as the free DNA report, so if your Living DNA file opens there, it converts here.

Format conversion moves columns around. It does not reinterpret your DNA.

What actually happens during the conversion

A raw DNA file is plain text. Different companies package the same four facts in different orders and with different separators, chromosome labels and no-call markers. Living DNA and 23andMe both report the marker ID, chromosome, position and the two letters at that position. The converter reads each row from the Living DNA file, keeps those four fields, and writes them in the 23andMe layout: rsid, chromosome, position and genotype, separated by tabs. It also matches 23andMe's chromosome names and no-call marker.

That is why the output works with tools that expect a 23andMe file. The tool is not changing the biology. It is changing the file's shape.

One detail that saves confusion: the output's first line says the file was converted, so nobody mistakes it for a genuine 23andMe export. It is a format conversion, not a company file. A tool that requires the exact 23andMe first line may refuse the converted file. Tools that parse the four data columns usually work, but check the target tool first.

Which Living DNA files work and which fail

The converter reads a Living DNA download as long as it is the raw data, not the web report or a PDF. The raw file is plain text. If you open it in a text editor, you see one marker per line. If you open it in Excel and save it again, the separator can change and the file may no longer parse. The fix is to re-download the raw data from Living DNA and avoid resaving it in a spreadsheet.

A zip from Living DNA usually contains one text file. You can drop the zip itself on the page. If the download stopped early, the converter leaves unreadable rows out and counts them. To check download completeness, use https://healthosx.com/dna/check. Re-downloading fixes any incomplete file.

Does the conversion change my genotypes?

No. The letters are copied as they are. If your Living DNA file says AG at rs4988235, the converted file says AG. A no-call stays a no-call, written the way 23andMe writes it (--). Positions the Living DNA file does not list are not filled in, and positions that fail to read are left out and counted. There is no imputation and no correction of calls.

This is the part people get wrong about raw DNA conversion. They assume a converter must be interpreting the file, or that switching formats might flip letters. It does not. A format converter is a layout change, not a genotype call.

A genuine 23andMe file has roughly 630,000 markers on recent chips. Your converted Living DNA file will have the markers Living DNA tested. If a third-party tool reports missing markers, that is not damage from conversion. It is the chip difference between companies, and it exists before you convert anything.

Will my file be uploaded when I convert it?

No. The conversion runs entirely in your browser. The JavaScript on the page opens the file locally, reads the markers, and builds the new file as a download on your device. The only thing the page records is that a conversion ran, the two formats and the outcome. It does not see your file, its name or any genotype.

If you are only changing format, there is no reference data to download. If you ask for a lift from GRCh38 to GRCh37, the page downloads a public mapping file, not your DNA file. The raw data stays on your machine.

This matters because a raw DNA file is as identifying as a fingerprint. You should not hand it to a site unless the tool actually needs it. An in-browser converter is the right model for this.

What can I do with the converted 23andMe file?

Once you have the .txt in 23andMe format, you can use it with many tools that accept a 23andMe-style text file. That includes third-party reports, trait calculators and some research tools. Check the target tool's rules first: some cap the number of markers or treat converted files differently from a single company export, but the layout itself is what most parsers check.

If you only want to read your DNA for health and ancestry, you may not need to convert anything. The free report at https://healthosx.com/dna reads Living DNA files directly, so you can skip the conversion and get the same data read in its original format.